This is a good start, although I spotted a few things that aren't quite correct from what little I know about Redis: it is a key value store, but the values can be of complex types, which makes it a bit more interesting (he does mention this in the notes). Also, antirez has done the VM mode to make it so that you can use the disk.<p>I'd like to see more articles like this, though, to get a better grasp of which of these things are good for what.